‫I know I know what you're thinking.
‫You're really chomping at the bit to get this subletting, but before we talk about it, it's better
‫to learn the IP classes and the subnet masks first.
‫Right?
‫Octet of the IP address are broken down to provide an addressing scheme that can accommodate large and
‫small networks.
‫So they're basically five different classes of networks, and they range from A to E.
‫We're going to focus on classes A, B and C, which provide unique cast addresses for networks of three
‫different network sizes.
‫Class D is for multicast networking and the Class C address ranges reserved for future or experimental
‫purposes.
‫So given an IP address, its class can be determined from the three high order bits.
‫And by that, I mean the three leftmost bit in the first octet.
‫In a class I address, the first octet is a network portion.
‫So Class AA has a major network address of one dot zero zero zero all the way through one to seven Dot
‫255.255.255.0.
‫The next 24 bits are for the network manager to divide in subnets and hosts as he or she sees fit.
‫Class addresses are used for networks that have more than 65000 536 hosts.
‫In a Class B address, the first two octet are the network portion.
‫So Class B has a major network address of one two eight zero zero zero all the way through one nine
‫one 255.255.255.0.
‫Arquette's three and four.
‫That means 16 bit are for a local subnets and hosts.
‫Class B addresses are used for networks that have between 256 and 65000 534 hosts.
‫And finally, in a Class C address, the first three octet are the network portion.
‫Class C has a major network address of one nine two zero zero zero all the way through two to three
‫Dot 255.255.255.0 Octet for eight bits is for local subnets and hosts perfect for networks with less
‫than 250 for hosts.